The ultrasound waves are generated using piezoelectric sensors, which are devices that run on energy generated when pressure is applied to a piezoelectric material. “This technology is what allows us to ... ....

–&nbsp;Lead zirconate titanate often referred to as PZT is one of the most widely used piezoelectric ceramic materials in the world ... Lead zirconate titanate shows piezoelectric effect (ability to produce electric charge in response to mechanical stress applied) ... generation....

There is some special hardware required, but the key ingredient is a cheap off-the-shelf piezoelectric transducer that’s able to generate vibrations that fall outside the range of human hearing. When connected to a signal generator and then mounted to a thin piece of glass or ......

24 ... 15 of 17 phones tested were vulnerable to this technique ... "We did it on glass ... Each scenario included an ultrasonic wave generator, a hidden microphone used to listen to the program's response, a piezoelectric transducer (which turns electrical signals into physical ones), and software capable of producing the necessary ultrasonic wave ... ....

a piece of software that can produce the right waveforms, an ultrasonic generator to output the signal, a piezoelectric transducer (a device that turns an electrical signal into physical vibrations), and a hidden microphone to listen for the voice assistant’s response....

The market for piezoelectricgenerators is expected to grow at highest CAGR during the forecast period. Among products, the market for piezoelectricgenerators is expected to grow at the highest CAGR during the forecast period. Piezoelectricgenerators are used in various portable medical devices that monitor blood sugar, medication, and vital signs....

This submerged node has a circuit board that houses a piezoelectric resonator, an energy-harvesting unit, and a microcontroller, Figure 2 ... The piezoelectric resonator absorbs the wave and it deforms (reorients) slightly — resulting in the generation of a tiny amount of storable energy which can later be harvested....